{"author":[{"last_name":"Ebrahimi","full_name":"Ebrahimi, Ehsan","first_name":"Ehsan"},{"id":"dc8f1524-403e-11ee-bf07-9649ad996e21","first_name":"Anshu","last_name":"Yadav","full_name":"Yadav, Anshu"}],"type":"conference","_id":"18755","acknowledgement":"Ehsan Ebrahimi is supported by the Luxembourg National Research Fund under the Junior CORE project QSP (C22/IS/17272217/QSP/Ebrahimi).","publication":"30th International Conference on the Theory and Application of Cryptology and Information Security","date_created":"2025-01-05T23:01:56Z","date_updated":"2025-09-09T12:00:12Z","page":"207-239","conference":{"location":"Kolkata, India","name":"ASIACRYPT: Conference on the Theory and Application of Cryptology and Information Security","start_date":"2024-12-09","end_date":"2024-12-13"},"date_published":"2024-12-12T00:00:00Z","abstract":[{"lang":"eng","text":"A universalthresholdizer (UT), constructed from a threshold fully homomorphic encryption by Boneh et. al , Crypto 2018, is a general framework for universally thresholdizing many cryptographic schemes. However, their framework is insufficient to construct strongly secure threshold schemes, such as threshold signatures and threshold public-key encryption, etc.\r\n\r\nIn this paper, we strengthen the security definition for a universal thresholdizer and propose a scheme which satisfies our stronger security notion. Our UT scheme is an improvement of Boneh et. al ’s construction at the level of threshold fully homomorphic encryption using a key homomorphic pseudorandom function. We apply our strongly secure UT scheme to construct strongly secure threshold signatures and threshold public-key encryption."}],"department":[{"_id":"KrPi"}],"doi":"10.1007/978-981-96-0891-1_7","article_processing_charge":"No","user_id":"317138e5-6ab7-11ef-aa6d-ffef3953e345","publisher":"Springer Nature","intvolume":"     15486","external_id":{"isi":["001443889100007"]},"publication_status":"published","language":[{"iso":"eng"}],"day":"12","oa":1,"publication_identifier":{"isbn":["9789819608904"],"issn":["0302-9743"],"eissn":["1611-3349"]},"quality_controlled":"1","citation":{"ama":"Ebrahimi E, Yadav A. Strongly secure universal thresholdizer. In: <i>30th International Conference on the Theory and Application of Cryptology and Information Security</i>. Vol 15486. Springer Nature; 2024:207-239. doi:<a href=\"https://doi.org/10.1007/978-981-96-0891-1_7\">10.1007/978-981-96-0891-1_7</a>","mla":"Ebrahimi, Ehsan, and Anshu Yadav. “Strongly Secure Universal Thresholdizer.” <i>30th International Conference on the Theory and Application of Cryptology and Information Security</i>, vol. 15486, Springer Nature, 2024, pp. 207–39, doi:<a href=\"https://doi.org/10.1007/978-981-96-0891-1_7\">10.1007/978-981-96-0891-1_7</a>.","chicago":"Ebrahimi, Ehsan, and Anshu Yadav. “Strongly Secure Universal Thresholdizer.” In <i>30th International Conference on the Theory and Application of Cryptology and Information Security</i>, 15486:207–39. Springer Nature, 2024. <a href=\"https://doi.org/10.1007/978-981-96-0891-1_7\">https://doi.org/10.1007/978-981-96-0891-1_7</a>.","apa":"Ebrahimi, E., &#38; Yadav, A. (2024). Strongly secure universal thresholdizer. In <i>30th International Conference on the Theory and Application of Cryptology and Information Security</i> (Vol. 15486, pp. 207–239). Kolkata, India: Springer Nature. <a href=\"https://doi.org/10.1007/978-981-96-0891-1_7\">https://doi.org/10.1007/978-981-96-0891-1_7</a>","short":"E. Ebrahimi, A. Yadav, in:, 30th International Conference on the Theory and Application of Cryptology and Information Security, Springer Nature, 2024, pp. 207–239.","ieee":"E. Ebrahimi and A. Yadav, “Strongly secure universal thresholdizer,” in <i>30th International Conference on the Theory and Application of Cryptology and Information Security</i>, Kolkata, India, 2024, vol. 15486, pp. 207–239.","ista":"Ebrahimi E, Yadav A. 2024. Strongly secure universal thresholdizer. 30th International Conference on the Theory and Application of Cryptology and Information Security. ASIACRYPT: Conference on the Theory and Application of Cryptology and Information Security vol. 15486, 207–239."},"isi":1,"year":"2024","volume":15486,"scopus_import":"1","main_file_link":[{"open_access":"1","url":"https://eprint.iacr.org/2024/2078"}],"status":"public","OA_type":"green","month":"12","OA_place":"repository","title":"Strongly secure universal thresholdizer","oa_version":"Preprint"}